Divisionism is a painting technique that emerged in the late 19th century, primarily associated with the Post-Impressionist movement. It involves applying small, distinct dots or strokes of color to a canvas, allowing the viewer's eye to blend the colors optically rather than physically mixing them on a palette. This method aims to create vibrant and luminous effects in the artwork. The technique was popularized by artists like Georges Seurat, who is best known for his masterpiece, A Sunday Afternoon on the Island of La Grande Jatte. Divisionism emphasizes the science of color theory and the perception of light, making it a significant contribution to modern art.